Ventilator



Dec. 16, 1930. G. E. BLACK 1,785,540

VENTILATOR Filed April 13, 1928 2 Sheets-Sheet l G. E. BLACK Dec. 16, 1930.

VENTILA'IOR Filed April 13, 1928 2 Sheets-Sheet 2 Patented Dec. 16, 1930 UNITED STATES PATENT OFFICE GEORGE E. BLACK, 0]! SEWIGKLEY, PENNSYLVANIA, ASSIGNOR TO H. H. ROBERTSON COMPANY, 0]! PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA VENTILATOR Application filed April 13,

This invention relates to ventilators for buildings and like structures having an air eduction pipe which communicates with the interior of the building.

The present invention has for its object to a provide ventilators of the character described with a valve and with a gutter which co-operate with the eduction pipe, as will be described, so as to prevent water produced by the melting of snow accumulated on the valve when closed; from entering the building through the eduction pipe when the valve is opened and the snow thereon melts.

The invention is especially adapted to be embodied in ventilators for use on mills, such as'silk mills and like places where goods are being produced which are capable of being damaged by water.

In the present instance I have illustrated one embodiment of the invention, in which the valve is shown as a butterfly valve located in the eduction pipe, and having its wings pivoted to a gutter secured within the eduction pipe below the valve and provided with an outlet pipe leading to the outside of the eduction pipe.

Provision is made for moving the butterfly valve into its open position by means of a single operating mechanism from within the building.

These and other features of this invention will be pointed out in the claims at the end of this specification.

Fig. 1 is an elevation of one construction of ventilator embodying the invention;

Fig. 2, an enlar 'ed view in vertical section on the line 2-2 of a portion of the ventilator shown in Fig. 1, and

Fig. 3, a perspective of the gutter shown in Fi s. 1 and 2. r

The present invention is herein shown as embodied in a t'entilator of the construction shown and described in United States Patent No. 1,589,581 dated June 22, 1926, and comprising an eduction' pipe 10 provided at its upper end with an outwardly extended lip 12, a storm band 13 surroundlng the upper end of the eduction pipe, a cap member 14 located in the upper end of the storm band and separated from the eduction pipe by a sub- 1928. Serial No. 269,691.

stantial space, a baffle plate 15 between the cap member and the eduction pipe, and a deflecting member 16 surrounding the eduction pipe below the storm band.

The ventilator is mounted upon the roof of the building with the eduction pipe 10 communicating with the interior of thebuildmg, and provision is made for closing the eduction pipe in stormy weather and particularly in the winter time to prevent snow from passing into the building through the eduction pipe.

To this end, the ventilator is provided with a valve, herein shown as a butterfly valve, comprising two wings 20, 21, which are arranged preferably within the eduction pipe as herein shown.

In the winter time and especially in a snowstorm, snow accumulates on the upper surface of the valve when the latter is closed, and when the valve is opened after the snowstorm, the snow melts and drips down into the building through the eduction pipe and is liable to damage the contents of the building. This is especially true when the building contains materials which are capable of being damaged by water, as, for instance, when the (huilding is a mill producing silk and like goo s.

Provision is made for preventing water produced by the melting of the snow on the upper surface of the valve from passing into the building through the eduction pipe.

To this end, the valve has co-operating with it a gutter for receiving the snow-water and conveying it to the outside of the eduction pipe.

In the present instance, the gutter is shown as a trough or box 23 (see Fig. 3) of a length substantially equal to the diameter of the outside of the eduction pipe, as said water accumulates in the gutter.

Provision is made for pivoting the win 20, 21 of the butterfly valve to the gutter. 0 this end, the sides 29, 30 of the utter have fastened to them as by bolts 31, rackets or ears 32 which form one member of a hinge, the other member of which is formed y brackets or lugs 33 attached to the wings 20,

21 by bolts 34 or otherwise, said members being connected by pivot pins 35.

The wings 20, 21 are made substantially semi-circular'in form when the eduction pipe 10 is circular in form, and in their closed position, said wings are supported at their outer edges by brackets 37 secured to the eduction pipe 10. The inner ends of the wings 20, 21 extend over the sides of the gutter, and the brackets 37 are arranged so that the wings are inclined downward toward the gutter as shown in Fig. 2, so that when the valve is closed any water on the upper surface of the valve will flow down into the gutter and as it accumulates therein will be conducted through the outlet pi 27 to the outside of the e uction pipe. e gutter is especially serviceable in taking care of snow-water when the valve is opened after a snow-storm.

By reference to Fig. 2, it will be observed that when the valve is closed as represented by the full lines, snow may accumulate on the wings of said valve, and when the valve is opened after the snow-storm is over, the wings are raised into substantially the position represented by dotted lines, and car with them the snow thereon, which, as it melts, descends into the gutter'and is discharged therefrom through the outlet ipe 27, thereby preventing this snow-water rom entering the building through the eduction pipe and thus avoiding the damage which might result if said snow-water was permitted to enter the building.

Provision is made for moving both wings of the valve from their closed into their 0 11 position by a single mechanism from wit in the building.

To this end, a cord, rope, cable or like flexible member 40 is passed through a hollow guide or tubular member 41 extended through and secured to the bottom of the gutter, and is then passed about a pulley 42 supported above and substantially in alignment with said guiding member 41, and then is passed about a pulley 43 connected with the wing 21, and is then carried across the eduction pipe and fastened to an eyebolt 44 secured to t e wing 20.

The ulley 42 is suitably supported from a cross ar or member 45 fastened at its ends to the bafile plate 15, and the pulley 43 is suitably secured to the wing 21.

By reference to Fig. 2, it will be observed that when an operator within the buildin pulls down upon the cord or rope 40, botfi mean-1o wings 20, 21 are turned upwardly toward each other and into substantially the position represented by dotted lines in Fig. 2. The wings 20, 21 are returned to their closed position by counterweights 47 attached to the wings, when the cord or rope 40 is released by the operator.

The tubular guiding member 41 is extended up into the utter a suflicient distance to avoid water 1n the gutter overflowing; into the tubular guiding member.

rom the above description, it will be seen that any water upon the u per surface of the valve is taken care of by the gutter and revented from entering into the buil ing through the eduction ipe. I

It may be preferred to arrange the valve and gutter within the eduction pipe, but it is not desired to limit the invention in this res ect.

ne embodiment of the invention is herein shown, but it is not desired to limit the invention t0 the particular construction shown.

What is claimed is:

1. Thecombination with a ventilator provided with an eduction pipe, of a valve cooperating'with said pipe to close and open the same, and a gutter below said valve open at its top and rovided with side and end walls, and having a water outlet p1pe extended from one of said .end walls through said eduction pipe to the outside thereof.

2. The combmation with a ventilator provided with an eduction pipe, of a gutter located in said eduction pi and open at its top and provided with si e and end walls, a water-outlet ipe leadin from one of s a1d end walls to t e outside 0 said eduction p1pe, a hollow guiding member extended through the bottom of said gutter, and above said bottom for a substantial distance, a butterfly valve havin wings pivotall mounted on the sides of sai gutter, a flexib e m ember extended through said hollow gu ding member and connected with said w1ngs to elevate the same, and counterwelghts attached to said wings to close them.

3. The combination with a ventilator provided with an eduction pipe, of a tter open at its top and provi e with s1 e and end walls, means for securing said end walls to said eduction pipe a water outlet p1pe for said gutter exten ed from an end wall of the tter and leading to the outside of said ed u btion pipe, and a butterfly valve provided with wings pivotally mounted on the side walls of said gutter and havmg their inner ends extended overthe gutter from opposite sides thereof, and means for moving said wings into a substantially vertical position above said gutter.

' 4. The combination with a ventilator provided with an eduction pipe, of a trough located in said eduction p1pe and provided with a bottom, and with side and walls extended upwardly from said bottom, meansfor detachably securing said end walls to said eduction pipe, a butterfly valve located in said eductlon pipe and having wings pivotally secured to the side walls of said trough to have their-inner sides project over said trough, means on the inside of said eduction pipe co-operating with the outer edges of said wings for supporting the latter in a position in which the incline downward towardsaid trough when said wings are in their closed position, an outlet pipe for said trough supported by an end wall thereof and extended through said eduction pipe to the outside thereof, and means for elevating said wings into their open position.

In testimony whereof, I have signed my name to this specification.

GEORGE E. BLACK. 

